Patient clinical parameters and lactate levels in LABC biopsies.

Specimens are named based on presence of benign breast tissue (bb) or presence of invasive cancer (LABC). Duplicate specimens are indicated (d). Measured lactate concentrations (μmol/g of tissue) are displayed in the last five columns. These values correspond to the lactate concentration range ([L]) seen in microregions in each specimen: fifth percentile/minimum (5P), twenty-fifth percentile (25P), fiftieth percentile/median (50P), seventy-fifth percentile (75P) and ninety-fifth percentile/maximum (95P). Samples are arranged in ascending order of median lactate concentrations. High and low lactate groups were determined based on median lactate concentrations >4.4 µmol/g. LABC5 and bb2 specimens are missing due to unavailable clinical information on these patients.